Wrench



UNITED STATES PATENT OFFICE.

VILLIAM KEARNE, OI" UNION, NEWT JERSEY.

WRENCH.

Specification of Letters Patent No. 30,579, dated November 6, 1860.

To all whom it may concern:

Be it known that I, VILLIAM KEARNEY, of the town of Union, in the countyof Hudson and State of New Jersey, have invented certain Improvements inIVrenches for Pipes and Stud-Bolts; and I do declare the following to bea full and exact description of the same, reference being herein had tothe drawiirgs7 which accompany this specification and make part of thesame.

rlhe nature of my invention consists, in giving facility and certaintyto the operation of the wrench by means of a jaw of a peculiarconstruction and arrangement.

In the drawings where the same letters refer to the same parts in eachfigure, Figure l is a perspective View of the complete wrench; Fig. 2shows the joint in the middle of the length of the jaw; Fig. 3, an endView olf each piece of the jaw; E ig. l, the position oi the jaw on thework when the upper joint is reversed.

In the drawings A shows the main body ot the wrench, B the slide, havingon it the rule joint foot, of the jointed jaw C, D.

F is the main screw nut and Gr the pipe lor stud bolt.

The object in forming the jaw in two pieces is that ot enabling theoperator to reverse the action of the wrench when in close ,quai-ters.The motion which tightens the hold on the pipe or bolt when the piece,C,

stands in the position shown in Fig. l, loosens it when the piece C isin the position shown in Fig. 4, and vice versa.

The joint in the length of the jaw is made by having a pin j on thelower end of the piece C which fits in a socket, lz, in the foot pieceD. Lengthwise of the face of the top of foot piece D, is a groove z',Fig. 3, into which a corresponding tongue m on the lower end of the jawpiece C is made to t, to hold the piece C from turning when it ischanged in its positions.

The spring on the back of the foot piece D or' the jaw allows the jaw toadmit the pipe it is to hold without moving the main slide B, and theinside of the body of the wrench forms an inclosed plane which makesless range of motion for the spring and makes the strain thereon moreeven in its action on different sized pipes or bolts than could beotherwise had.

that I claim as my improvement and desire to secure by Letters Patent isThe jointed jaw, C, D, with its rule joint foot when combined with thespring E and the inclined plane f, and constructed substantially in themanner and for the purpose hereinabove set forth.

WILLIAM KEARNEY.

IVitnesses:

IV. M. GOODING, J. L. J ONES.

